Explore topic-wise MCQs in Cytogenetics.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Cytogenetics knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of these proteins help to backtrack the RNA?

A. XPC
B. Dna G
C. TFIIH
D. CSA
Answer» E.
2.

RNA has a proofreading mechanism.

A. True
B. False
Answer» B. False
3.

You can see non-cannonical base pairing in________

A. dsDNA
B. ssDNA
C. dsRNA
D. ssRNA
Answer» D. ssRNA
4.

When Rho catches up with RNA polymerase it _______

A. Stalls
B. Falls off
C. Backtracks
D. Moves on
Answer» C. Backtracks
5.

Rho dependent termination mechanism doesn’t reguire____________

A. ATP
B. Stem loop structure
C. G-C rich stem
D. Sigma factor
Answer» E.
6.

Rho shows base preference although it doesn’t have any concensus cis binding sequence. Which region will be expected to bind Rho better?

A. G and C rich region
B. A and T rich region
C. Region rich in C and poor in G
D. Region rich in A and poor in T
Answer» D. Region rich in A and poor in T
7.

YOU_CAN_SEE_NON-CANNONICAL_BASE_PAIRING_IN________?$

A. dsDNA
B. ssDNA
C. dsRNA
D. ssRNA
Answer» D. ssRNA
8.

WHEN_RHO_CATCHES_UP_WITH_RNA_POLYMERASE_IT________?$

A. Stalls
B. Falls off
C. Backtracks
D. Moves on
Answer» C. Backtracks
9.

Which of these proteins help to backtrack the RNA?$

A. XPC
B. Dna G
C. TFIIH
D. CSA
Answer» E.
10.

RNA has a proofreading mechanism.$

A. True
B. False
Answer» B. False
11.

Rho dependent termination mechanism doesn’t reguire___________?#

A. ATP
B. Stem loop structure
C. G-C rich stem
D. Sigma factor
Answer» E.
12.

Rho shows base preference although it doesn’t have any concensus cis binding sequence. Which region will be expected to bind Rho better?$

A. G and C rich region
B. A and T rich region
C. Region rich in C and poor in G
D. Region rich in A and poor in T
Answer» D. Region rich in A and poor in T
13.

Rho protein, that is necessary for transcription termination, is a ________

A. Homotetramer
B. Heterotetramer
C. Heterohexamer
D. Homohexamer
Answer» E.
14.

You modify your gene DNA sequence by introducing an attenuator within the transcribed region. You isolate the labeled gene product and perform SDS PAGE. You observe two bands one higher and another slightly lower. Which of this band corresponds to properly modified sequence?

A. Higher
B. Lower
C. Both the bands as they show differently folded protein
D. This is an experimental artifact
Answer» C. Both the bands as they show differently folded protein
15.

Which of these interactions is the weakest?

A. rC-dG
B. rG-dC
C. rA-dT
D. rU-dA
Answer» E.
16.

To study the functioning of intrinsic terminator you increase the number of G-C base pairs in the stem and decrease the U bases from the tail region. What would be its effect on termination?

A. No visible effect
B. Efficiency will decrease
C. Efficiency will increase
D. The RNA polymerase will stall at the terminator
Answer» B. Efficiency will decrease
17.

A ssRNA shows inverted tandem repeat. What would be its secondary structure?

A. Linear
B. Hair pin
C. Stem-loop structure
D. Crucifix
Answer» D. Crucifix
18.

What form of helix would you expect to see in double stranded RNA?

A. A form
B. B form
C. C form
D. D form
Answer» B. B form